Clonally diverse rfb gene clusters are involved in expression of a family of related D-galactan O antigens in Klebsiella species.

Klebsiella species express a family of structurally related lipopolysaccharide O antigens which share a common backbone known as D-galactan I. Serotype specificity results from modification of D-galactan I by addition of domains of altered structure or by substitution with O-acetyl and/or alpha-D-Galp side groups with various linkages and stoichiometries… CONTINUE READING